Molding-machine.



I Patented July I, I902. B. A. FRANKLIN. MOLDING MACHINE.

(Application filed Mar. 6, 1901.)

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Patented July I, I902.

B. A. FRANKLIN.

MOLDING MACHINE.

(Application filed Mar. 6, 1901.)

3 Sheets-Shoe} 2.

(No Model.)

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"0. 703,647. I Patented'luly' l, I902.

B. A. FRANKLIN.

MOLDING IACIHNE.

(Application filed Mar. 6, 1901.)

3 Sheets-Sheet 3.

(No Model.)

IN VEN WITNESSES W W waiaw;

UNITED STATES PATENT OFFICE.

BENJAMIN ALVEY FRANKLIN, OF PHILADELPHIA, PENNSYLVANIA.

MOLDING-MACHINE.

SPECIFICATION forming part Of Letters Patent NO. 703,647, dated. July 1,1902.

Application filed March 6, 1901. Serial No. 50,027- (No model) Toall'whom it 77%03/0072106771.

Be it known that I, BENJAMIN ALVEY FRANKLIN, a citizen of the UnitedStates, residing in the city and county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inMolding-Machines, of which the following is a full, clear, andexact-description, reference being had to the accompanying drawings,forming a part of this specification. I

This invention relates to moldin g-machines, my object herein being toprovide a simple and efficient apparatus whereby molds or parts of moldsfor the casting of either light or heavy objects may be produced.

To this end my invention comprises in such an apparatus various novelfeatures of construction and organization of parts, which will behereinafter fully set forth and claimed.

In the drawings, Figure 1 is a plan of a machine embodying my invention.Fig. 2 is a side elevation thereof with one side of the track removed.Fig. 3 is a transverse vertical section as on the line 3 3 of Fig. 1.Fig. 4 is an elevation of the machine as viewed at right angles to Fig.2, showing the-relative positions of the parts just preceding'the'in--version of the mold. Fig. 5 is a view show ing the position of the partspreparatory to drawing the pattern, the carriers being represented inposition to support the flask. Fig. 6 is a transversesection throughthe-pattern and former, showing their relative positions after'thefacing sand hasbeen introduced and compacted. Fig. 7 is a side elevationof a portion of the trackway, the carriers thereon, and'the flaskmounted on said carriers. Fig. 8 is an end view of one of theflask-carriers, showing in section the trackrail therefor. Fig. 9 is atransverse sectional view of the completed mold.

A represents a bed-plate upon which is I supported a predeterminedpattern B for the reception of the sand to betherein compacted andshaped, and 0 represents a verticallymovable rammer adapted to pack thesand in the matrix b of the pattern. This rammer in the present instancecomprises a'member or former 1, corresponding with such matrix and beingdetachably secured, by bolts 2, for instance, to the under side of aplate 3 which is rotatably mounted, by trunnions 4, for exportion of themember 1 of the rammer.

ample, in vertically-movable rods 5. suitable mechanism may be employedto operate these rods. In the construction illustrated in the drawingsthe rods constitute the piston-rods of vertical liftcylinders 6, ofeither the pneumatic or hydraulic type. Inasmuch as these cylinders areof well-known construction and operation no description thereof isdeemed necessary.

The rammer, as I have termed it, is temporarily locked in horizontalposition by pins 7, that are inserted in holes in thecontiguous portionsof the plate and rods, these holes being so relatively disposed that therammer may be locked in place with either side lowermost. One of thetrunnions of the rammerplate is, preferably provided with a handle 8 tofacilitate the operation of turning the rammer.

In the plate 3 are formed openings 0, which follow, preferably, theoutline of the adjacent On the respective ends of the plate,about themiddle thereof, are pivoted arms 9, which may be swung upon the plate orbe allowed to depend therefrom. The free ends of these arms areperforated, as at 10, for engagement with centrally-disposed pivot-studs,11 on the respective ends of the pattern, as and for a purposehereinafter described. Pivoted on the respective ends of the said plate3 at or near the corners thereof,are arms 12, which similarly to thearms9 maybe swung upon or suspended from the'plate. The free extremitiesof the arms 12 are hook-shaped for engagement with suitably-locatedsockets 13 in the ends of the pattern and also with the recessed sidesof the flask D, as will presently appear. This flask is imposed on thepattern B preparatory to the formation of the mold-section.- Uponthecompletion of said section the flask is removed therewith for use eitherseparately or in conjunction with another flask havin g a complementarymold-section.

As a simple and efficient means to handle the flask I provide a novelconstruction of carriers and trackway whereby the flask may be run uponand oif the pattern as desired. The trackway comprises parallel rails14:, extending from a suitable point toward and across the bed-plate onwhich the pattern is supported, that portion of the trackway adjacentAny to the bed-plate comprising laterally-movable railsections 15,slidingly supported on uprights 16.

In the present instance four carriers E for the flask are mounted to runon the trackway, two carriers being on each rail adjacent the respectiveends of the flask. Each of the carriers comprises a frame 17, hearing ateach end thereof a pair of wheels 18, that take against the opposingrail of the trackway and bearing also a vertically-movable screw 19,provided with an adjustingnut 20. This screw is furnished at its upperend with a recess or seat 21 for the reception of a laterallyextendingstud 22 on the flask, the latter being provided on each side with two ofthese studs for engagement with the respective carriers.

The foregoing is a description of one form of my apparatus. Itsoperation is as follows: At the outset the rammer is elevated, with themember 1 thereof turned upward and the hooks 12 depending, and a patternB, having the requisite shape or matrix therein, is located upon thebed-plate. The rail-sections 15 are arranged in line with the main railsof the trackway, and the flask D is mounted upon the respective carriersE and run thereby upon the trackway to lie directly above the pattern.The rammer is then lowered and the hooks 12 engaged with the sides ofthe flask. This done the rammer is slightly raised to lift the flaskfrom the carriers. The rail-sections, with the carriers thereon, arethen moved laterally awayfrom the pattern, whereupon the flask islowered upon the pattern and secured thereto by the usual dogs. Next thehooks are disengaged from the flask and the rammer raised and inverted.The parts then occupy the positions shown in Fig. 2. The rammer is thenlowered so that the member 1 thereof enters the matrix of the pattern,while the plate 3 lies slightly above the flask, an intervening space01, Fig. 6, being left between the member and the pattern. Facing-sandis then introduced into this space by way of the openings cin the plate3 This being done the rammer is slightly lowered, so as to pack thefacing-sand in the pattern. The rammer is then raised entirely above theflask and a quantity of backing-sand introduced into the pattern. Thissand is rammed by the part 1 of rammer 0, another quantity thereof isintroduced and rammed, and the operation repeated until the pattern andthe flask have been filled. Just before the last stroke of the rammer aplate F is placed upon the sand rising from the flask, which plateduring such stroke efiects the consolidation of the sand within theflask. Plate F is then locked to the flask by the usual dogs, followingwhich the rammer is raised and inverted. The arms 9 are then engagedwith the studs 11 on the pattern, as shown in Fig. 4E, and the rammer israised, thus lifting the pattern and its appurtenances. The pattern,flask, the. during their elevation are inverted about the pivots 11 bygravity, whereupon the pattern, flask, &c., are lowered upon thebedplate. This done the arms 9 are freed from the studs and thrownupward. The hooks 12 are then engaged with the sockets 13 in thepattern, and the latter, with its connections, is bodily raised untilthe lateral studs 22 on the flask are slightly above the carriers. Thenthe track-sections are moved into line with the main track, and thecarriers E are brought below the respective studs 22 of the flask, asshown in Fig. 5. The screws 19 of the carriers are adjusted to engagethese studs, and inasmuch as the pattern is suspended in horizontalposition by the depending hooks it follows that when the screws areengaged with the studs on the flask, as stated, the flask will besupported therebyin a horizontal position. The dogs which connect thepattern with the flask are then removed and the rammer is raised, thusdrawing the pattern in perfect alinement from the sand. This completesthe operation. The flask, with the mold or mold-section therein, is thenremoved from the apparatus by the carriers on the trackway.

The pattern and former will of course be changed from time to time asparticular requirements of service may demand. As to the other elementsof the apparatus it will be obvious that the same may be modified invarious respects without departing from the fair spirit of theinvention. I therefore do not limit myself to the specific details ofconstruction herein shown and described; but

WVhat I claim is-- 1. In a molding-machine, the combination with apattern, of a rammer, means for effecting a relative movement betweenthe rammer and the pattern, and devices for connecting the rammer andthe pattern when the rammer is moved toward said pattern.

2. In a molding-machine, the combination with a pattern, of a rammer,means for effecting a relative movement between the rammer and thepattern, and devices carried by the rammer for engaging the pattern.

3. In a molding-machine, the combination with a pattern, of a rammerhavinga former complementary with the shape of the pattern, means foreifeeting a relative movement between the rammer and the pattern, anddevices for connecting the rammer and the pattern when the rammer ismoved toward said pattern.

4:. In a molding-machine, the combination with a pattern, of a rammerhaving a former complementary with the shape of the pattern, means foreffecting a relative movement between the rammer and the pattern, andconnecting devices carried by the rammer for engaging the pattern.

5. In a molding-machine, the combination with a pattern, of a rammercomprising a plate having a former projecting from one of its faces,means for effecting a relative movement between the rammer and thepattern,

from one of its faces, means for effecting a relative movement betweenthe rammer and the pattern, means carried by said plate and V formingbearings for said pattern, and means for rotating said plate to permitrotation of the pattern.

8. In a molding-machine, the combination with the pattern-support, of'arotatable rammer, and means for eifecting a relative move ment betweenthe rammer and the patternsupport.

9. In a molding-machine, the combination with the pattern-support, of arotatable ram mer, means for effecting a relative movement between therammer and the pattern-support, and movable means whereby the patternmay be pivotally suspended from the rammer.

10. In a molding-machine, the combination with the pattern-support, of arammer, means for effecting a relative movement between the rammer andthe pattern-support, and suspension devices carried by said rammerwhereby the pattern may be pivotally suspended from the rammer.

11. In a molding-machine,the combination with the pattern-support, of arotatable rammer, means for effecting'a relative movement between therammer and the pattern-support, and means whereby the pattern may beconnected with and disconnected from the rammer. a

12. In a molding-machine, the combination with the pattern and the flaskthereon,'of a rammer, means for effecting a'relative movement betweenthe rammer and the pattern,

nected with and disconnected from the rammer.

13. In combination a pattern, a flask adapted to be mounted thereon, anda rammer com prising a plate and former, means depending from the sideof the plate providing turning supports for said pattern, and devicesdepending from the corners of the plate for support ing either saidflask or said pattern.

14. In a molding-machine, the combination with a pattern, of arammercomprising aplate having a former projecting from one of itsfaces, said plate being provided with a series of filling-openingsarranged around the form er and discharging into the pattern when therammer is positioned relatively thereto.

15. In a molding-machine, the combination with a pattern, a rammer, andmeans for ef* fecting a relative movement between said pattern andrammer, of a trackway arranged adjacent to the pattern and rammer,carriers mounted thereon and provided with vertically-adjustablesupports, and a flask adapted to be engaged by said supports andtransported by the carriers to and from the pattern.

16. In a molding-machine, the combination with a pattern, a rammer, andmeans for effecting a relative movement between said pattorn and rammer,of a trackway arranged adjacent to the pattern and rammer and providedwith laterally-movable rail-sections adjacent to the pattern, carriersmounted on said trackway and provided with verticallyadjustablesupports, and a flask adapted to be engaged by said supports andtransported by the carriers to and from the pattern.

In testimony whereof I have hereunto affiXed my signature in thepresence of two subscribing witnesses.

BENJAMIN ALVEY FRANKLIN.

Witnesses:

ANDREW V. GRoUrE, JOHN R. NOLAN.

